Which air gap manifold?

Guys, thinking of moving away from current Edddy Performer inlet to an Air Gap.
which would be best for fast street use and occassional strip;the Performer (0-5000rpm) or the Performer rpm (1500+)?
motor is 360, 9-1-0 compression, XE268 cam, 2400 stall, 3.55 or 3.91 gear
Interested in opinions